氟

The structure characteristics and lubricate theory of nanometer graphite fluoride were analyzed,and tribological properties of nanometer graphite fluoride were researched on four-ball machine.

探讨了纳米级氟化石墨的结构特征和润滑原理，使用四球摩擦试验机研究了纳米级氟化石墨的摩擦学性能。

It seems that preparation from hexafluoroacetone through Grignard reaction has superiorities as facile raw materials, simple operation and so on.

认为以六氟丙酮为原料经格氏反应制备六氟-2-甲基异丙醇具有原料易得、操作简便等特点，值得进行深入研究。

And then the title compound was synthesized through reacting of 5-fluorouracil with hexyl isocyanate in the presence of 4-(N,N-diethylamino)pyridine as catalyst.

以正庚酸、氯化亚砜和叠氮化钠为原料，通过酰化、库尔提斯重排反应制备异氰酸己酯，然后在4吡啶催化下与5氟尿嘧啶缩合得到抗癌药物卡莫氟，总收率75.4%。

Objective: To study the skin metabolism of leflunomide in neonatal SD rat skin homogenate.

目的：研究来氟米特在新生SD大鼠皮肤匀浆中的代谢作用，为来氟米特经皮给药制剂的研究提供实验依据。

Safety and quality for agricultural product safety demand for non-environmental pollution fruit (GB 18406.2-2001) prescribes eight heavy metals and harmful substances in apple, such as arsenic, hydrargyrum, lead, cadmium, chrome, fluorine, nitrite, nitrate and also the residue limit of 22 pesticides.

另外，发布实施的《食品中污染物限量》(GB 2762-2005)规定了苹果中铅、镉、汞、无机砷、铬、硒、氟和稀土等8种污染物的限量标准[1]；《食品中农药最大残留限量》(GB 2763-2005)规定了苹果中49种农药的残留限量[2]；《农产品安全质量无公害水果安全要求》(GB 18406.2-2001)规定了苹果中砷、汞、铅、镉、铬、氟、亚硝酸盐、硝酸盐等8种重金属和有害物质以及22种农药的残留限量[3]。

The influence of excess anhydrous hydrogen fluoride, the amount of oleum and its trickling rate, t...

在此过程中，本文研究了无水氟化氢过量百分率、发烟硫酸用量及滴加速度、六氟磷酸的加热时间、加热温度以及冷凝介质等因素对五氟化磷产率和纯度的影响。

The influence of excess anhydrous hydrogen fluoride, the amount of oleum and its trickling rate, the time...

在此过程中，本文研究了无水氟化氢过量百分率、发烟硫酸用量及滴加速度、六氟磷酸的加热时间、加热温度以及冷凝介质等因素对五氟化磷产率和纯度的影响。

Also, in this method, anhydrous hydrogen fluoride, from which moisture was removed by treating with F.sub.2 gas, is used in the steps and, and the step further comprises contacting the reaction system of the step with F.sub.2 gas.

同时，在此方法中的步骤和步骤还使用了经过氟气（F.sub.2 gas）除湿的无水氟化氢，而且步骤中还包括了其反应系统与氟气的接触。

And reacting the phosphorous pentafluoride with the lithium chloride in a hydrogen fluoride to prepare the lithium hexafluoro phosphate.

b使氟化磷与氯化锂在氟化氢中发生反应，制备六氟磷酸锂。

The influence of excess anhydrous hydrogen fluoride, the amount of oleum and its trickling rate, the time and temperature of heating hexafluorophosphoric acid, and refrigerants on the yield and the content of phosphorus pentafluoride was studied.

在此过程中，本文研究了无水氟化氢过量百分率、发烟硫酸用量及滴加速度、六氟磷酸的加热时间、加热温度以及冷凝介质等因素对五氟化磷产率和纯度的影响。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。